David Carlin has written the following on Bible reading by Catholics:
Of course, there is an old tradition among lay Catholics of not reading the Bible. Prior to the Protestant Reformation, this non-reading was a natural byproduct of the fact that the vast majority of lay Catholics were illiterate. Besides, such Bibles as were available were written in Latin, not the vernacular languages. And then, once the Reformation took place, Bible-reading took on the color of being a distinctively Protestant thing, therefore something faithful Catholics should avoid. Protestants, after all, appealed to the authority of the Bible to challenge the authority of the pope and the bishops, and when they read the Bible they came to certain theological conclusions that conflicted with Catholic doctrine. Reading the Bible was dangerous for Catholics.
In the long period from the Council of Trent to Vatican II, a period of approximately four centuries, the Catholic Church adopted a highly defensive mode of being. There were two great intellectual dangers to the Faith – first the Protestant danger and then the secularist danger that stemmed from the Enlightenment. The Index of Prohibited Books was created to defend Catholics against these dangers. Of course, it was impossible to put the Bible on the Index, since the Bible, according to Catholic teaching, was the inspired Word of God. But if the Bible couldn’t be banned, at least Catholics could be effectively discouraged from reading it. There were several ways of doing this:
◦A strong emphasis on Natural Religion had the effect of depreciating the value of Revelation generally.
◦A strong emphasis on Tradition as a second source of Divine Revelation had the effect of depreciating the value of the Bible.
◦Secondhand narrations of biblical stories, instead of moving Catholics to consult the original sources (the Bible itself), more often gave them the impression that it was not necessary to examine the Bible.
◦Catholics were told that they must not read Protestant translations of the Bible (e.g., the Authorized Version); if they insisted on reading the Bible, they must read properly annotated Catholic translations.◦Some gentle ridicule directed at the Biblicism of our “separated brethren” taught Catholics to shy away from the Bible.◦In general, Catholics were seldom seriously encouraged by their priests and nuns to search the Scriptures.
All this changed, officially at least, at Vatican II, which dropped the Church’s 400-year-old “defensive mode of being.” Lay Catholics were now at long last given the green light to read the Bible; indeed, they were encouraged to read it. Yet today, nearly a half-century later, 44 percent of American Catholics “rarely or never” read the Bible, and only 7 percent read it on a daily basis. How can this be?
catholicity.com/commentary/carlin/05386.html